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... Tiny quantum tornadoes observed in ultracold gases of fermionic atoms provide definitive evidence of superfluidity, and open up new vistas in the modelling of quantum many-body systems. transport of electrons in superconductors in terms of composites known as Cooper pairs. The great interest in ultr ...
... Tiny quantum tornadoes observed in ultracold gases of fermionic atoms provide definitive evidence of superfluidity, and open up new vistas in the modelling of quantum many-body systems. transport of electrons in superconductors in terms of composites known as Cooper pairs. The great interest in ultr ...
March meeting 2006 on non-abelian statistics
... model. The degrees of freedom are an Ising spin on the links of a square lattice. The potential is chosen to require that in the ground state, there must be an even number of spins up touching each vertex. ...
... model. The degrees of freedom are an Ising spin on the links of a square lattice. The potential is chosen to require that in the ground state, there must be an even number of spins up touching each vertex. ...
Peter Heuer - Quantum Cryptography Using Single and Entangled
... Bob, without the message being intercepted by an eavesdropper, Eve. Classical codes can use a key held by both Alice and Bob to prevent Eve from understanding their correspondence. However, this type of code can be easily defeated if Eve manages to intercept the encryption key itself. Classically, t ...
... Bob, without the message being intercepted by an eavesdropper, Eve. Classical codes can use a key held by both Alice and Bob to prevent Eve from understanding their correspondence. However, this type of code can be easily defeated if Eve manages to intercept the encryption key itself. Classically, t ...
Distributed measurement-based quantum computation
... made into using techniques from classical process calculi [LJ04, GN04], these have remained rather descriptive and are, to our opinion, not very well-suited to really get a grip on the low-level quantum aspects. In this work, we define the distributed measurement calculus, an assembly language for d ...
... made into using techniques from classical process calculi [LJ04, GN04], these have remained rather descriptive and are, to our opinion, not very well-suited to really get a grip on the low-level quantum aspects. In this work, we define the distributed measurement calculus, an assembly language for d ...
A quantum central limit theorem for sums of IID
... In this note we shall prove a general central limit theorem for sums of quantum (tensor) independent identically random variables which can be seen as an analytic extension of the algebraic CLT of Giri and von Waldenfels [GW]. Our main tool is a quantum version of the Lévy-Cramér continuity theorem ...
... In this note we shall prove a general central limit theorem for sums of quantum (tensor) independent identically random variables which can be seen as an analytic extension of the algebraic CLT of Giri and von Waldenfels [GW]. Our main tool is a quantum version of the Lévy-Cramér continuity theorem ...
simulate quantum systems
... systems hinges on the exponential growth of the size of Hilbert space with the number of particles in the system. Keeping track of all degrees of freedom is thus a computationally expensive problem (e.g., the dimension of the Hilbert space of 20 qubits is > 106 ). As a result, classical computers ca ...
... systems hinges on the exponential growth of the size of Hilbert space with the number of particles in the system. Keeping track of all degrees of freedom is thus a computationally expensive problem (e.g., the dimension of the Hilbert space of 20 qubits is > 106 ). As a result, classical computers ca ...
IntroGametheory
... Economic theory (game of maximizing monetary rewards, stock market, business, ie supply and demand) Diplomacy(2 to N players, N>2 coalitions tend to form) Secure communications (the quantum-mechanical protocols for eavesdropping [Gisin & Huttner 1997, Ekert 1991] and optimal cloning can be formulate ...
... Economic theory (game of maximizing monetary rewards, stock market, business, ie supply and demand) Diplomacy(2 to N players, N>2 coalitions tend to form) Secure communications (the quantum-mechanical protocols for eavesdropping [Gisin & Huttner 1997, Ekert 1991] and optimal cloning can be formulate ...
Contradiction of quantum mechanics with local hidden variables for
... and momentum 共and various linear combinations of these coordinates兲 cannot be predicted by any local hidden variable theory. This result is of fundamental interest since the original argument 关1兴 of Einstein, Podolsky, and Rosen was given in terms of position and momentum measurements. It was pointe ...
... and momentum 共and various linear combinations of these coordinates兲 cannot be predicted by any local hidden variable theory. This result is of fundamental interest since the original argument 关1兴 of Einstein, Podolsky, and Rosen was given in terms of position and momentum measurements. It was pointe ...
Presentation (PowerPoint File)
... decoherence through error correction and fault-tolerant computation. 5. Measurement: The ability to read out the state of the computer in a convenient product basis. ...
... decoherence through error correction and fault-tolerant computation. 5. Measurement: The ability to read out the state of the computer in a convenient product basis. ...
Document
... – Any two states s, t are either the same (s = t), or different (s t), and that’s all there is to it. ...
... – Any two states s, t are either the same (s = t), or different (s t), and that’s all there is to it. ...
Another version - Scott Aaronson
... R: “old” Hawking photons / B: photons just coming out / H: still in black hole ...
... R: “old” Hawking photons / B: photons just coming out / H: still in black hole ...
Bounds on Quantum Probabilities - D
... perfectly agree with the experimental results. The crucial point is the interpretation of the mathematical formalism that is in most cases far away from common sense. A main point of discussion is certainly the inherent indeterminism, i. e. that predictions derived from quantum theory can only be gi ...
... perfectly agree with the experimental results. The crucial point is the interpretation of the mathematical formalism that is in most cases far away from common sense. A main point of discussion is certainly the inherent indeterminism, i. e. that predictions derived from quantum theory can only be gi ...
Energy levels, photons and spectral lines
... Max Planck showed how the radiation emitted or absorbed by an object was quantized but still thought of light as a wave. ...
... Max Planck showed how the radiation emitted or absorbed by an object was quantized but still thought of light as a wave. ...
Lecture 11 Identical particles
... In classical mechanics, particles are always distinguishable – at least formally, “trajectories” through phase space can be traced. In quantum mechanics, particles can be identical and indistinguishable, e.g. electrons in an atom or a metal. The intrinsic uncertainty in position and momentum therefo ...
... In classical mechanics, particles are always distinguishable – at least formally, “trajectories” through phase space can be traced. In quantum mechanics, particles can be identical and indistinguishable, e.g. electrons in an atom or a metal. The intrinsic uncertainty in position and momentum therefo ...
The presentation template
... Finally, Alice sends her (single) qubit to Bob Bob now has one of the Bell states. These are orthonormal and can be distinguished by measurements. ...
... Finally, Alice sends her (single) qubit to Bob Bob now has one of the Bell states. These are orthonormal and can be distinguished by measurements. ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: